Impact of climate variability on groundwater in coastal cities

气候变化对沿海城市地下水的影响

• 批准号: 8451-2011
• 负责人: Howard, Kenneth
• 金额: $ 1.6万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=544517
• 关键词: Impact; climate; variability; groundwater; coastal

Population growth, sprawling cities and the effects of climate change seriously threaten the sustainability of global water supplies. Pro-active resource management decisions are required, but such efforts will prove meaningless unless reliable predictions can be made of the impact that rapidly changing conditions will impart upon the water cycle and water resources. The threat is especially severe in coastal cities which host close to 50% of the global population. In many coastal cities, the management and protection of groundwater is already challenged by accelerating demand for the resource in the face of depleted natural recharge, pollution from urban-sourced contaminants and (for sea coasts) the intrusion of seawater. Climate variability and changing sea levels will intensify such resource management problems by altering the recharge regime and stimulating the movement of both contaminants and the fresh-saline water interface.

人口增长、城市扩张和气候变化的影响严重威胁着全球水供应的可持续性。需要作出积极主动的资源管理决定，但除非能够对迅速变化的条件对水循环和水资源的影响作出可靠的预测，否则这种努力将毫无意义。在居住着全球近50%人口的沿海城市，这种威胁尤其严重。在许多沿海城市，地下水的管理和保护已经受到挑战，因为面对枯竭的自然补给、城市污染物的污染和（对沿海地区而言）海水的侵入，对地下水资源的需求正在加快。气候多变性和海平面变化将改变补给制度，刺激污染物和淡水-盐水界面的移动，从而加剧这种资源管理问题。